66341603 has 2 divisors, whose sum is σ = 66341604. Its totient is φ = 66341602.

The previous prime is 66341573. The next prime is 66341609. The reversal of 66341603 is 30614366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66341603 - 2²⁰ = 65293027 is a prime.

It is not a weakly prime, because it can be changed into another prime (66341609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33170801 + 33170802.

It is an arithmetic number, because the mean of its divisors is an integer number (33170802).

Almost surely, 2^66341603 is an apocalyptic number.

66341603 is a deficient number, since it is larger than the sum of its proper divisors (1).

66341603 is an equidigital number, since it uses as much as digits as its factorization.

66341603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 66341603 is about 8145.0354818134. The cubic root of 66341603 is about 404.8200246926.

Adding to 66341603 its reverse (30614366), we get a palindrome (96955969).

The spelling of 66341603 in words is "sixty-six million, three hundred forty-one thousand, six hundred three".